Abstract

Present work focuses on the study of nonlinear optical properties of borotellurite glass of composition 0.1BaO-0.4TeO2-0.5B2O3. Third order optical nonlinear coefficients of borotellurite glass have been investigated by using the standard z-scan method using 100 femtosecond Ti: sapphire laser at 1550 nm wavelength with repetition rate of 1 kHz. Nonlinear refractive index n2 was estimated to be 2.59 × 10−17 cm2/W. Nonlinear absorption coefficient β was found to be 0.3189 × 10−12 cm/W. Nonlinear susceptibility χ(3) has been calculated to be ~1.8329 × 10−14 esu.

Notes

Acknowledgments

Authors are thankful to Prof. A.K. Kar of Heriot Watt University, Edinburgh, UK for providing the experimental support for this work. Authors are also thankful to Dr. S.S. Negi, director IRDE and Sh. S.P. Gaba, Scientist ‘G’ for their support and encouragement for the work.